general_configuration

General configuration

We use several configuration files to configure the mini-Internet and define its topology at the different layers. The configuration files should be in the config. They are organized as follow:

config/
├── external_links_config.txt    [inter-AS links and policies] 
└── AS_config.txt                [per-AS topology & config]
    ├── router_config.txt                    [L3 internal topology]
    ├── internal_links_config.txt            [L3 internal topology]
    ├── layer2_switches_config.txt             ^
    ├── layer2_hosts_config.txt              |   [L2 topology]
    └── layer2_links_config.txt           v   

AS_config.txt file

The AS_config.txt is the main configuration file. It lists all the ASes and IXPs in the mini-Internet. The table below describes each column and show an example configuration. "Config" in the third column indicates whether the components (hosts, switches and routers) in the corresponding AS should pre-configured, otherwise write "NoConfig". In the topologies we provide, all the ASes are pre-configured by default.

The next columns allow to change the L2 and L3 topologies according to the AS. More precisely, the fourth and fifth columns indicate the configuration files to use to build the L3 topology. For instance for AS 3 we use the L3 topology defined in the files router_config_full.txt and internal_links_config.txt. The next columns indicate the configuration files to use to build the L2 topologies. For instance for AS 3 we use the L2 topology defined in the files layer2_switches_config.txt, layer2_hosts_config.txt and layer2_links_config.txt.

AS number	Type	Auto-config	L3 Routers parameters	L3 Internal topology	L2 Switches parameters	L2 Hosts parameters	L2 Local Network topology
1	AS	Config	l3_router.txt	l3_links.txt	l2_switches.txt	l2_hosts.txt	l2_topology.txt
2	AS	Config	l3_router.txt	l3_links.txt	l2_switches.txt	l2_hosts.txt	l2_topology.txt
11	AS	Config	l3_router.txt	l3_links.txt	l2_switches.txt	l2_hosts.txt	l2_topology.txt
12	AS	Config	l3_router.txt	l3_links.txt	l2_switches.txt	l2_hosts.txt	l2_topology.txt
5	AS	Config	l3_router.txt	l3_links.txt	l2_switches.txt	l2_hosts.txt	l2_topology.txt
6	AS	Config	l3_router.txt	l3_links.txt	l2_switches.txt	l2_hosts.txt	l2_topology.txt
15	AS	Config	l3_router.txt	l3_links.txt	l2_switches.txt	l2_hosts.txt	l2_topology.txt
16	AS	Config	l3_router.txt	l3_links.txt	l2_switches.txt	l2_hosts.txt	l2_topology.txt
3	AS	Config	l3_router.txt	l3_links.txt	l2_switches.txt	l2_hosts.txt	l2_topology.txt
4	AS	Config	l3_router.txt	l3_links.txt	l2_switches.txt	l2_hosts.txt	l2_topology.txt
13	AS	Config	l3_router.txt	l3_links.txt	l2_switches.txt	l2_hosts.txt	l2_topology.txt
14	AS	Config	l3_router.txt	l3_links.txt	l2_switches.txt	l2_hosts.txt	l2_topology.txt
80	IXP	Config	N/A	N/A	N/A	N/A	N/A
81	IXP	Config	N/A	N/A	N/A	N/A	N/A
82	IXP	Config	N/A	N/A	N/A	N/A	N/A

Examples

In addition, we also provide multiple sample topologies (see examples/config_2020, examples/config_2019 and examples/config_l2). Of course, you can also define your own topology using the configuration files.